diff --git a/composer.json b/composer.json
index f338262a..0de8ab51 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "description": "PHP binding for v4 of the Cloudflare Client API.",
   "type": "library",
   "require": {
-    "guzzlehttp/guzzle": "^7.0.1",
+    "guzzlehttp/guzzle": "^6.3 || ^7.0.1",
     "php": ">=7.3",
     "psr/http-message": "~1.0",
     "ext-json": "*"
diff --git a/tests/Endpoints/KeyValueTest.php b/tests/Endpoints/KeyValueTest.php
index 8703cb4d..10aec18d 100644
--- a/tests/Endpoints/KeyValueTest.php
+++ b/tests/Endpoints/KeyValueTest.php
@@ -36,13 +36,11 @@ public function testListKeys()
         $this->assertEquals(self::TEST_KEY_NAME, $result->result[0]->name);
         $this->assertEquals(1, $result->result_info->count);
     }
-
     public function testGetKeyValue()
     {
         $stream = $this->getPsr7StreamForFixture('Endpoints/getKeyValue.txt');
         $adapter = $this->getMockBuilder(Adapter::class)->disableOriginalConstructor()->getMock();
         $adapter->method('get')->willReturn(new Response(200, ['Content-Type' => 'application/json'], $stream));
-
         $adapter->expects($this->once())
             ->method('get')
             ->with($this->stringStartsWith(sprintf('accounts/%s/storage/kv/namespaces/%s/values', self::TEST_ACCOUNT_ID, self::TEST_KV_NAMESPACE_ID)));